CA1305917C - Process and apparatus for the packaging of paper handkerchiefs - Google Patents
Process and apparatus for the packaging of paper handkerchiefsInfo
- Publication number
- CA1305917C CA1305917C CA000555302A CA555302A CA1305917C CA 1305917 C CA1305917 C CA 1305917C CA 000555302 A CA000555302 A CA 000555302A CA 555302 A CA555302 A CA 555302A CA 1305917 C CA1305917 C CA 1305917C
- Authority
- CA
- Canada
- Prior art keywords
- push
- platform
- folding turret
- folding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004806 packaging method and process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 10
- 210000003813 thumb Anatomy 0.000 claims description 9
- 239000002985 plastic film Substances 0.000 claims description 5
- 229920006255 plastic film Polymers 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035611 feeding Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B25/00—Packaging other articles presenting special problems
- B65B25/14—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form
- B65B25/145—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form packaging folded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
- B65B11/28—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a curved path, e.g. on rotary tables or turrets
- B65B11/30—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a curved path, e.g. on rotary tables or turrets to fold the wrappers in tubular form about contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
- B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
- B65B63/022—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles using compressing chambers or plates moving in an endless path
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Basic Packing Technique (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Packaging Of Special Articles (AREA)
Abstract
Abstract:
(In conjunction with Figure 1) In the production of packs for stacks (10) of paper handkerchiefs, the problem is to give the cuboid pack an exact shape. When a stack of paper handkerchiefs is pushed into a pocket (13) of a folding turret (12), the stack (10) is compressed by a press plate (22) movable up and down in the peripheral direction of the folding turret (12) and, in this compressed form, is pushed into the pocket (13) to-gether with a blank (11). On the opposite side of the fold-ing turret, the virtually finished pack is pushed in the radial direction out of the pocket (13) and onto a push-out platform (48) which moves up and down along the periphery of the folding turret and which is temporarily, in particu-lar during the reception of the pack, in synchronism with the folding turret (12). During a standstill phase of the push-out platform, the pack is transferred from the latter to a discharge conveyor (49).
(In conjunction with Figure 1) In the production of packs for stacks (10) of paper handkerchiefs, the problem is to give the cuboid pack an exact shape. When a stack of paper handkerchiefs is pushed into a pocket (13) of a folding turret (12), the stack (10) is compressed by a press plate (22) movable up and down in the peripheral direction of the folding turret (12) and, in this compressed form, is pushed into the pocket (13) to-gether with a blank (11). On the opposite side of the fold-ing turret, the virtually finished pack is pushed in the radial direction out of the pocket (13) and onto a push-out platform (48) which moves up and down along the periphery of the folding turret and which is temporarily, in particu-lar during the reception of the pack, in synchronism with the folding turret (12). During a standstill phase of the push-out platform, the pack is transferred from the latter to a discharge conveyor (49).
Description
130~917 The invention relates to a process for the pack-aging of compressible articles, especially stacks of paper handkerchiefs, into a blank consisting of plastic film or the like. The invention also relates to an ap-S paratus for the packaging of articles of this type.
In the packaging of pulp products, especially stacks of paper handkerchiefs, a considerable problem arises because the articles to be packaged can be com-pressed to a considerable extent. It is therefore dif-ficult to produce an exact cuboid pack.
The object on ~hich the invention is based is toprovide a process and an apparatus for the packaging of stacks of paper handkerchiefs in particular~ by means of ~hich cuboid packs of exact shape can be produced, ~hilst at the same time the output of the packaging machine is increased considerably.
To achieve this object, the process according to the invention is characterized in tha~ the article (stack of paper handkerchiefs) is compressed before ~rapping and ZO is ~rapped in compressed form. As a result of the pre-pressing of the folded paper handkerchiefs ~hich are con-ventionally arranged on top of one another in layers of ten, a compact- exactly shaped pack, in ~hich the stack 1305~3i7 remains under pre-stress, i5 obtained.
In the procedure for carrying out the process, the arriving stacks of paper handkerchiefs are compressed and are pushed, in this form, into the pocket of a rotating folding turret, at the same time taking ~ith them a blank consisting of plastic film or the like ~hich Lays itself round the stack in a U-shaped manner. The pockets of the folding turret are appropriately made so~ewhat larger (in terms of width in the peripheral direction of the folding turret) than the compressed stack. It thereby becomes easier for the stack to be pushed in, taking with it the blank. In the pocket, the stack continues to remain under stress, that is to say compressed. During the transport of the stacks by the continuously rotating folding turret, the folding tabs of the blank which project on the radi-ally outer side and on the axial sides are folded and heat-sealed. The virtually finished packs pushed out of the pockets of the folding turret have a very exact cuboid shape.
According to the invention, assigned to the fold-ing turret is a stack rocker which is movable up and down in the direction of rotation of the latter and onto which the articles to be packaged, namely the stacks of paper handkerchiefs, are pushed during a momentary standstill in the end pos;tion of the cycle of moveeent, are acceler-ated to the peripheral speed of the folding turret and are then pushed into an adjacent pocket of the latter. The stack rocker interacts with a pressing rocker which, after a stack has been pushed onto a push-in platform, com-presses the stack, that is to say the article to be pack-aged, from above. Th;s operation takes place during the acceleration of the stack to the peripheral speed of the folding turret, so that the stack can be pushed into the pocket in the radial direction during mo-entary synchro-nism between the folding turret or pocket of the latterand the push-in platform of the st3ck rncker.
A pushing-out station of the folding turret like-wise has assigned to it a push-out platform movable to 13059~7 and fro or up and down in a rocking motion, which, when temporarily in synchronism with the folding turret, re-ceives the pack pushed out of the pocket of the folding turret and transfers it to a discharge conveyor during a standstiil phase.
A considerable increase in output of the appar-atus according to the invention is obtained as result of a two-track mode of operation. According to this, two packs are produced simultaneously on two tracks located next to one another. For this purpose, a single common folding turret with an appropriate dimension in the axiaL
direction is used, and with continuous pockets, each for rece;ving two packs located next to one another, and com-mon members l;kewise of appropriate dimension, such as a stack rocker, pressing rocker, pushing-in device, pushing-out device and push-out platform.
Further features of the invention relate to the design of the folding turret and of the members for feed-ing and discharging the articles to be packaged and the packs.
An exemplary embodiment of the invention is ex-plained in detail below with reference to the drawings.
In the drawings:
Figure 1 shows a s;de view of the apparatus with a fold-Z5ing turret, Figure 2 shows a horizontal section through the folding turret according to Figure 1, Figure 3 shows a plan view of the folding turret accord-ing to Figures 1 and 2, Figure 4 shows a transverse view of a push-in platform and pushing-in device as a detail on an enlarged scale, Figure S likewise shows a transverse view of a detail of a pushing-out station, in particular a push-out platform, Figure 6 shows, on an enlarged scale, a detail of the folding turret in the region of the pushing-out station, with members in different positions.
The apparatus illustrated-as an exemplary ,.. .
130S~
embodiment in the dra~ings serves for the packaging of stacks 10 of paper handkerchiefs. These are laid folded on top of one another, a stack 10 conventionally con-sisting of ten paper handkerchiefs. The stack 10 is S ~rapped in a bLank 11 consisting of a thin plastic film.
The central unit of the apparatus is a folding turret 12 ~hich is dr;ven to rotate at continuous speed, ;n the clock~ise d;rection in the representation accord-iny to Figure 1.
The folding turret 12 has a multiplicity of pock-ets 13 which are arranged distributed along the periphery and in ~hich the articles to be packaged are received in-dividually or in pairs, together ~ith a blank 11. The pockets 13 are open on the radially outer side and at the axial ends.
The stacks 10 are fed to the folding turret 12 in the region of a pushing-in station 14. Leading to this is a feed conveyor 15 extending in a horizontal plane, speci-fically in the mid-pLane relative to the folding turret 12. Here, this is designed as a chain conveyor. Tappets 16 are attached to tuo chains 17, 18 running next to one another. The stack 10 to be transported rests slidably on a conveying plate 19. The chains 17, 18 are arranged offset in the region of their deflection in such a way that the tappets 16 connected to each chain 17, 18 are moved do~n~ards in parallel, that is to say without piv-oting. The stacks 10 supplied can thereby be set down ex-actly in an end position~ ~ithout the individual layers being tisplaced.
The stacks 10 are conveyed by means of the feed conveyor 15 up to a push-in platform 20 provided adjacent to the periphery of the folding turret 12. This platform is arranged on the end of a rocker, namely a stack rocker 21, ~oved to and fro, in particuLar in a vertical plane about the centre of rotation of the folding turret 12. The stack rocker 21 is mounted so as to be pivotable coaxially relative to the folding turret 12, and the end projecting beyond the folding turret 12 forms the push-in platform 20.
--` 13059~7 The stack rocker 21 is movable, together ~;th the push-in platform, out of a lo~er initial position (the unbroken lines in Figure 1) into an upper reversing posi-tion (the dot-and-dash lines in Figure 1). In the lo~er S initial position, the push-in platform 20 extends essen-tially in the extension of the feed conveyor 15. During a momentary standstill phase, the stack 10 is placed on the push-in platform 20 by the synchronously controlled feed conveyor 15.
Immediately after a stack 10 has been placed on the push-in platform 20, a pressing me~ber, in particular a press plate 22, is activated, which is lowered onto the stack 10 from above and compresses it considerably. In this compressed state, the stack 10 is ooved in the direc-tion of rotation of the folding turret by the stack rocker 21, the press plate 22 travelling with it. ~hen the per;-pheral speed of the folding turret 12 is reached, the stack 10, in compressed form, is pushed in the radial di-rection by a pushing-in device 23 into the pocket 13, ro-tating in the same plane, of the folding turret 12. Thedimension of the pocket 13 in the peripheral direction cor-responds to the size of the pack 24 to be produced. Ap- }
propriately, the stack 10 is compressed to a somewhat greater extent than the peripheral dimension of the pocket 25 13, so that it becomes easier to push it in.
The press plate 22 is attached to the underside of a pressing rocker 25 movable synchronously with the stack rocker 21. This pressing rocker, like the stack rocker 21, is pivotable about the centre of rotation of 30 the folding turret 12. The pressing rocker 25 is moved, together with the stack rocker 21, in the direction of rotation of the folding turret 12, the pressing position being ma;ntained. After the compressed stack 10 has been pushed into the pocket, the pressing rocker 25 returns to 35 the initial position together with the stack rocker 21, but initially at a greater d;stance from the latter, so that the uncompressed stack 10 can be conveyed freely on-to the push-in platform 20.
, .
., ,, , 13(~S9~
The pushing-in device Z3 is connected to the pres-sing rocker 25 so as to be relatively movable. The latter is provided, outside the region of the foldin~ turret 12, ~it~ an oblong hole 26, in which a guide roller 27 connec-S ted to the pushing-in device 23 is movable to and fro~ The guide roller 27 is arranged on a link 28, by means of which the pushing-in device 23 is moved to and fro. rhe link 28 is itself connected to a crank arm 29 pivotable about the axis of rotation of the folding turret 12. A movement of the link Z8 causes a linear shift of the pushing-in device 23, the stack 10 being pushed into a pocket 13 at the same time. The pushing-in device 23 is made hook-shaped, so that the stack 10 can be grasped on the outside.
The stacks 10 are pushed ;nto the pockets 13, each taking with it the blank 11 provided in the pushing-in sta-tion 14. For this purpose, the blanks 11 are brought, via a deflecting roLler 30, up to the periphery of the folding turret 12. This is provided with a multiplicity of suction bores 31, 32 opening onto the peripheral surface. The ar-rangement of these is such that two suction bores 32 or groups of suction bores 32 are arranged on both sides of each pocket 13. As a result, each blank is secured by means of suction air at its edges at the front and rear in the conveying direction and on both sides of the pocket 13. The suction bores 31, 32 are connected to a vacuum source via a suction segment 33 and a radial suction line 34.
The suction segment 33 extends in the peripheral direction into a region located after the pushing-in sta-tion 14. It is then followed by a blowing-air segment 35 which, via a compressed-air line 36, feeds air through the suction bores 31, 32 over a part zone. An air stream sta-bilizing the radial position of tubular tabs 37 and 38 is thereby yenerated particularly by means of the suction bores 3Z arranged directly on both sides of the pocket 13.
These tubular tabs 37, 38 which project on the outside or protrude from the pocket after the stack 10 has been pushed into the pocket 13, togcther ~ith the blank 11 folded in a ~30S9i7 U-shaped manner, are now folded, specifically first the tubular tab 37, at the rear in the conveying direction, by a pivotable folder 39 which folds the tubular tab 37 from the rear against the outer side face of the stack 10.
The pocket 13, together with the stack lO and the partially folded blank 11, thereafter enters the region of a sealing unit 40. This consists of an endless covering band 41 which rotates, moved in particular at the speed of the folding turret 12, and which is made of heat-resistant material, especially a textile Teflon* band. The covering band 41 is guided via two deflecting rollers 42, 43 arranged at a relatively long distance from one another and located directly adjacent to the periphery of the folding turret 12.
A third deflecting roller 44 is assigned to the rear outer strand of the covering band 41. As a result of the relative position of the deflecting rollers 42, 43, a conveying or jointly running conveying strand fits closely against the peripheral surface of the folding turret 12. Arranged on the outside of the conveying strand 45 is a heating element, in particular an arcuate heating segment 46. This element is made arcuate concentrically relative to the folding turret 12, but is arranged so that it has no permanent contact with the covering band 41 or its conveying strand 45.
When the pocket 13, together with its content, enters the region of the covering band 41, the tubular tab 38 located at the front in the conveying direction is folded round against the outer side face, partially over-lapping with the tubular tab 37. During further conveyance, the stack 10 together with the blank 11 enters the region of the heating segment 46.
It is important, here, that, as a result of appropriately selected dimensions, the stack 10, including the folded blank 11, should project slightly from the pocket 13 in the radial direction, that is to say protrude beyond the peripheral * Registered Trade-mark of E.I. DuPont de Nemours and Company, U.S.A.
:
i. X
__~.....
~.. .. .
-7a-surface of the folding turret 12. The covering band 41 or its conveying strand 45 is thereby lifted slightly by the stack 10 in the region of a pocket 13, in particular until it comes ..,,, . _ ~
., ~
r~ _ 1 3~5~
up against the heating segment 46. The heat for carrying out sealing and also a certain pressure are thus transmit-ted here locally in the region of the folded tubular tabs 37, 38. The heating segment 46 extends over a region of the folding turret 12 corresponding to the distance bet~een three successive pockets 13, to an extent sufficient to carry out secure sealing.
The heating segment 4~ can be adjusted radially, in particular retracted from the heating position, by means of members not shown in detail, ~hen no packs are supplied during an interruption in operation or when the folding turret 12 temporarily stands still.
The pack, finished in respect of the outer tub-uLar fold (tubular tabs 37 and 38) now passes, together with the associated pocket, into the region of a pushing-out station 47. This is located opposiee the pushing in station 14, that is to say in the horizon~al m;d-plane of the folding turret 12.
Arranged in the region of the pushing-out station 47 and adjacent to the outer periphery of the folding tur-ret 12 is a push-out platform 48. This is moved to and fro or up and dovn in the peripheral direction of the fold-ing turret 12 in correspondence with the push-in platform 20. The largely finished pack 24 is pushed out of the pocket and onto the push-out platform 48 during a phase of synchronous movement of the folding turret 12 and push-out platform 48. The push-out platform 48 then returns to an ~upper) end position ~hich is aligned with a discharge conveyor 49 ;n the horizontal mid-plane.
In the present exemplary embodiment, the push-out platform 48 is connected to the stack rocker 21 which is extended beyond the axis of rotation of the folding turret 12 and which, opposite the push-in platform 20, receives the push-out platform 48 at the free end. The movements of the rush-in platform 20 and of the push-out platform 48 therefore always correspond to one another.
The relative arrangment is such that the push-in platform 20 is moved upwards, after rece;ving a stack i30591~
g 10, and at the same t;me the push-out platform 48 is moved dovnwards for acceLeration up to the peripheral speed of the f~ld;ng turret 12. The transfer of the pack 24 to the push-out platform 48 consequently takes place be~o~ the plane of the discharge conveyor 49. During the return of the push-in platform 20 to the initial pos;tion, the push-out platform 48, together ~ith the pack, is moved up~ards level with the discharge conveyor 49, and during a momen-tary standstill phase the pack is dra~n off from the push-out platform 48 in the radial direction by a hook-shaped pushing-off device and transferred to the discharge con-veyor 49.
Each pocket 13 has its o~n pushing-out device 51 assigned to it. In the retracted initial position~ this device is located on the radially inner side of the pocket 13 and thus forms the bottom of the latter. For this pur-pose, the pushing-out device 51 is designed as a strip ~hich extends over the entire length of the pocket 13 in the axial direction. For the lateral linitation of the other~ise open pockets 13, folding thumbs 52, 53 pointing in the radiaL direction are arranged laterally on the pushing-out device 51. The axial distance between the folding thumbs 52, 53 corresponds to the Length of the stack 1û or pack 24. As a result of the des;gn of the folding thumbs 52, 53, when a stack 10 together with a blank 11 is pushed ;nto a pocket 13, a side tab 54 loc-ated at the front in the pushing-in direction is folded.
This is the first fold of a kno~n cross-fold formed on the end faces of the pack.
the outer side tab 55 located opposite the inner side tab 54 is folded only ~hen the pack is pushed out of the pocket in the region of the pushing-out station 47.
For this purpose, folding thumbs 56 are arranged laterally on the push-out platform 48, ~hich take effect in the opposite direction to the folding thumbs 52, 53 and, ~hen the pack 24 is pushed onto the push-out platform 48, fold the side tab 55 located at the front in the conveying di-rection. For the better guidance and fixing of the pack, 13059~
the push-out platform 48 is made pocket-shaped, in parti-cular ~ith a top ~all 57 as an upper guide for the pack.
When the pack Z4 is pushed into the discharge con-veyor 49 from the push-out platform 48, upper and lower longitudinal side tabs 58 are folded. For this purpose, in the entry region of the disharge conveyor 49 there are, attached laterally between a lo~er band 59 and an upper band 60, folding members, in particular folding tongues 61, by ~hich the upper and lo~er longitudinal side tabs 58 are folded in a kno~n ~ay during the transport of the packs. The side tabs 54 and 55 folded first are held in position, in this region, by means of angular guide mem-bers 62.
In order to push a pack 24 out of a pocket 13 in the reg;on of the pushing-out station 47, the pushing-out device 51 assigned to the pocket 13 is moYed in the radial direction. For this purpose, the pushing-out device 51 is attached to radially directed rams 63. T~o such rams 63 are arranged on each pushing-out device 51 at a distance fro0 one another in the axial direction and are held slide-ably in guides 64 inside the turret 12. The radial move-ment of the pushing-out devices 51 is brought about by la-teral cam discs 65, in vhich a control groove 66 is made.
In turn, a guide roller 67 assigned to each pushing-out device 51 runs in this control groove 66. In the exemplary embodiment illustrated, a guide roller 67 is arranged at each of the tvo ends of a transverse rod 68 connecting the rams 63 to one another.
The control groove 66 of the cam disc 65 is made concentric relative to the folding turret 12 over its pre-dominant extent, so that the pushing-out devices 51 are in the retracted inner position. In the region of the pushing-out station 47, specifically belou the latter, the control groove bulges radially at 69. This bulge gives rise to the ejecting stroke of the pushing-out device 51 ~hen the pocket 13 and push-out platform 48 rotate adjacent to one another at the same speed.
- The pivoting movements of the stack rocker 21 and 3()S~
consequently of the push-in platform 20 and push-out plat-for- 48 are set to an amount of move~ent (arrows 70) of 18. As is evident from Figure 6, an acceleration phase of 4 in the present case and a synchronous phase 72 of 10 are provided. During this, the stacks 10 or packs Z4 are transferred into the pocket 13 and out of it respec-tively.
As is also evident from Figure 6, for the accel-eration of the pushing-out operation during this phase, the cam disc 65 is additionally pivoted in the opposite direction to the folding turret, so that the bulge 69 of the control groove 66 moves out of the initial position, represented by dot-and-dash lines in Figure 6, into the position shown by unbroken lines~ This results in a rapid brief radial movement of the rams 63 during the synchron-ous phase 7Z.
The apparatus illustrated here is des;gned for two-track operation in order to increase the productive capacity. Accordingly, two stacks 10 are fed simultan-ZO eously, by ~eans of two paralLel feed conveyors 15, to thefolding turret 12. The dimensions of the latter in the axial direction are such that the two stacks 10 can be re-ceived next to one another in a common continuously open pocket 13. In the present case, the folding turret 12 is designed as a hollow body on the principle of construction of the yarn spool, with a cylindrical turret casing 73 and an approximately central radial support 74 on a rotating hub 75. Formed at one edge of the turret casing 73 is a flange 76 which is directed radially inwards and ~hich is designed with an internal toothing 77 extending all round for the engagement of a drive pinion 78~
A cam disc 65 is located on each side within the turret casing 73. The two cam discs are connected to one another via a hollow shaft 79. One of the cam discs 65 ~shown at the top in Figure 2) is driven in a rocking mo-tion by means of a crank ~echanism 80, in order to bring about the pushing-out movement described in relation to Figure 6. The cam discs 65 are moved jointly by means of - l~O~9i'~
the hollow shaft 79.
The rams b3 for actuating the push;ng-out devices 51 are also located ins;de the turret casing 73. The gu;des 64 are connected to the supports 74.
The pushing-out dev;ces 51 extend over the entire axial length of the pockets 13 for receiving two stacks 10. Each strip-shaped pushing-out device 51 is accordingly provided with t~o pair of folding thumbs 52, 53~
The push-in platform 20 (Figure 4) is made in one piece and has a width for receiving two stacks 10. The po-sition of these on the push-in platform ZO continuous in the axial direction is guaranteed by lateral guides 81, 82 which are designed, on the entry side, with a run-in cham-fer 83 and also ~ith an upper chamfer 84. The pendulum drive of the stack rocker 21 is attached on the side of the push-in platform 20 and below this. A lever 85 as part of a crank mechanism 86 engages centra~ly here.
The pushing-in devices 23 for the two production tracks are also designed in a special way. Two pushing-in devices 23 of this type are connected to one another by means of an upper crossmember 87. Each pushing-in device 23 is divided into three by means of vertical slots 88.
These are arranged so that, when the pushing-in device 23 is retracted, the correspondingly fork-shaped tappet 16 of the teed conveyor 15 can run right into the region of the pushing-in device 23, in particular because the fork-shaped tappet 16 passes through the slots 88.
Press plates 22 assigned to the two production tracks are arranged on the underside of a supporting beam 89 extending in the axial direction. Adjoining each of its lateral ends is the pressing rocker 25 which accordingly extends on both sides of the folding turret 1Z by means of tuo rocker arms 90, 91 and ~hich is mounted rotatably in a bearing recess 92 of the hollow shaft 79. The pressing rocker 25 or its rocker arms 90, 91 are extended beyond the abovementioned bearing, that is to say beyond the centre of rotation of the folding turret 12. On the side located op-posite the pushing-in station 14, the ends of the rocker arms 90, 91 are connected to one another by means of a transverse rod 93. A pivoting drive for the pressing rocker 25, in particular a crank ~echanism 94, engages on this rod approximately in the centre. The rocker arms 90, 91 S extend as vertical legs on the top side of the supporting beam 89. The t~o rocker arms 90, 91 are provided, in the reg;on of the push-in platform, ~ith an oblong hole 26 for the guide roller 27 of the pushing-;n devices 23. For this purpose, their transversely directed crossmember 87 is pro-1û vided with do~n~ard-directed legs 95, to the inner face of each of which the guide roller 27 is attached.
Two links 28 extending laterally next to the fold-ing turret 12 and intended for the joint actuat;on of the two pushing-in devices 23 are assigned, as extensions of the legs 95, to the pushing-in devices 23 or to the common crossmember 87. The erlds of the links 28 are each connec-ted, in turn, to a crank arm 29. The two crank arms 29 are triven in a rocking motion by means of a common drive shaft 96 which is mounted rotatably in the hoLlow shaft 79.
The hollow shaft 79 or its bearing recess 92 also serves for the rotatable mounting of the stack rockers Z1 likewise extending on both sides of the folding turret 12.
Finally, located in each of the two bearing recesses 9Z is a bearing block 97 as a supporting stand or machine stand Z5 of the folding turret 1Z.
In order to produce an exact pack Z4, a skirt 98 arranged in the region of the pushing-in station 14 extends downwards along a part periphery of the folding turret 12 and fits closely against the periphery of the latter. The skirt 98 is provided, level with the pushing-in platform Z0, with an aperture 99 for the passage of the stack 10.
The skirt 98 is attached to the press plate ZZ, in parti-cular to the underside of the latter, and is consequently moved up and down together with it.
The side of the pushing-out station 47 is also designed for two-track operation. As is evident from Figure 5, for the two production tracks there is a com-mon continuous push-out platform 48 which is sub-divided 1;~()S917 into closed push-out pockets 100, 101 by means of the top wall 57 and side walls with folding thumbs 56. Two hook-shaped pushing-off devices 50 ass;gned to the push-out pockets 100, 101 are connected by means of a crossbar 102 S to form a common structure. Two packs 24 are therefore al~ays drawn off from the push-out platform 48. The top ~aLl 57 is provided with slots 103 for the passage of the crossbar 102.
In the packaging of pulp products, especially stacks of paper handkerchiefs, a considerable problem arises because the articles to be packaged can be com-pressed to a considerable extent. It is therefore dif-ficult to produce an exact cuboid pack.
The object on ~hich the invention is based is toprovide a process and an apparatus for the packaging of stacks of paper handkerchiefs in particular~ by means of ~hich cuboid packs of exact shape can be produced, ~hilst at the same time the output of the packaging machine is increased considerably.
To achieve this object, the process according to the invention is characterized in tha~ the article (stack of paper handkerchiefs) is compressed before ~rapping and ZO is ~rapped in compressed form. As a result of the pre-pressing of the folded paper handkerchiefs ~hich are con-ventionally arranged on top of one another in layers of ten, a compact- exactly shaped pack, in ~hich the stack 1305~3i7 remains under pre-stress, i5 obtained.
In the procedure for carrying out the process, the arriving stacks of paper handkerchiefs are compressed and are pushed, in this form, into the pocket of a rotating folding turret, at the same time taking ~ith them a blank consisting of plastic film or the like ~hich Lays itself round the stack in a U-shaped manner. The pockets of the folding turret are appropriately made so~ewhat larger (in terms of width in the peripheral direction of the folding turret) than the compressed stack. It thereby becomes easier for the stack to be pushed in, taking with it the blank. In the pocket, the stack continues to remain under stress, that is to say compressed. During the transport of the stacks by the continuously rotating folding turret, the folding tabs of the blank which project on the radi-ally outer side and on the axial sides are folded and heat-sealed. The virtually finished packs pushed out of the pockets of the folding turret have a very exact cuboid shape.
According to the invention, assigned to the fold-ing turret is a stack rocker which is movable up and down in the direction of rotation of the latter and onto which the articles to be packaged, namely the stacks of paper handkerchiefs, are pushed during a momentary standstill in the end pos;tion of the cycle of moveeent, are acceler-ated to the peripheral speed of the folding turret and are then pushed into an adjacent pocket of the latter. The stack rocker interacts with a pressing rocker which, after a stack has been pushed onto a push-in platform, com-presses the stack, that is to say the article to be pack-aged, from above. Th;s operation takes place during the acceleration of the stack to the peripheral speed of the folding turret, so that the stack can be pushed into the pocket in the radial direction during mo-entary synchro-nism between the folding turret or pocket of the latterand the push-in platform of the st3ck rncker.
A pushing-out station of the folding turret like-wise has assigned to it a push-out platform movable to 13059~7 and fro or up and down in a rocking motion, which, when temporarily in synchronism with the folding turret, re-ceives the pack pushed out of the pocket of the folding turret and transfers it to a discharge conveyor during a standstiil phase.
A considerable increase in output of the appar-atus according to the invention is obtained as result of a two-track mode of operation. According to this, two packs are produced simultaneously on two tracks located next to one another. For this purpose, a single common folding turret with an appropriate dimension in the axiaL
direction is used, and with continuous pockets, each for rece;ving two packs located next to one another, and com-mon members l;kewise of appropriate dimension, such as a stack rocker, pressing rocker, pushing-in device, pushing-out device and push-out platform.
Further features of the invention relate to the design of the folding turret and of the members for feed-ing and discharging the articles to be packaged and the packs.
An exemplary embodiment of the invention is ex-plained in detail below with reference to the drawings.
In the drawings:
Figure 1 shows a s;de view of the apparatus with a fold-Z5ing turret, Figure 2 shows a horizontal section through the folding turret according to Figure 1, Figure 3 shows a plan view of the folding turret accord-ing to Figures 1 and 2, Figure 4 shows a transverse view of a push-in platform and pushing-in device as a detail on an enlarged scale, Figure S likewise shows a transverse view of a detail of a pushing-out station, in particular a push-out platform, Figure 6 shows, on an enlarged scale, a detail of the folding turret in the region of the pushing-out station, with members in different positions.
The apparatus illustrated-as an exemplary ,.. .
130S~
embodiment in the dra~ings serves for the packaging of stacks 10 of paper handkerchiefs. These are laid folded on top of one another, a stack 10 conventionally con-sisting of ten paper handkerchiefs. The stack 10 is S ~rapped in a bLank 11 consisting of a thin plastic film.
The central unit of the apparatus is a folding turret 12 ~hich is dr;ven to rotate at continuous speed, ;n the clock~ise d;rection in the representation accord-iny to Figure 1.
The folding turret 12 has a multiplicity of pock-ets 13 which are arranged distributed along the periphery and in ~hich the articles to be packaged are received in-dividually or in pairs, together ~ith a blank 11. The pockets 13 are open on the radially outer side and at the axial ends.
The stacks 10 are fed to the folding turret 12 in the region of a pushing-in station 14. Leading to this is a feed conveyor 15 extending in a horizontal plane, speci-fically in the mid-pLane relative to the folding turret 12. Here, this is designed as a chain conveyor. Tappets 16 are attached to tuo chains 17, 18 running next to one another. The stack 10 to be transported rests slidably on a conveying plate 19. The chains 17, 18 are arranged offset in the region of their deflection in such a way that the tappets 16 connected to each chain 17, 18 are moved do~n~ards in parallel, that is to say without piv-oting. The stacks 10 supplied can thereby be set down ex-actly in an end position~ ~ithout the individual layers being tisplaced.
The stacks 10 are conveyed by means of the feed conveyor 15 up to a push-in platform 20 provided adjacent to the periphery of the folding turret 12. This platform is arranged on the end of a rocker, namely a stack rocker 21, ~oved to and fro, in particuLar in a vertical plane about the centre of rotation of the folding turret 12. The stack rocker 21 is mounted so as to be pivotable coaxially relative to the folding turret 12, and the end projecting beyond the folding turret 12 forms the push-in platform 20.
--` 13059~7 The stack rocker 21 is movable, together ~;th the push-in platform, out of a lo~er initial position (the unbroken lines in Figure 1) into an upper reversing posi-tion (the dot-and-dash lines in Figure 1). In the lo~er S initial position, the push-in platform 20 extends essen-tially in the extension of the feed conveyor 15. During a momentary standstill phase, the stack 10 is placed on the push-in platform 20 by the synchronously controlled feed conveyor 15.
Immediately after a stack 10 has been placed on the push-in platform 20, a pressing me~ber, in particular a press plate 22, is activated, which is lowered onto the stack 10 from above and compresses it considerably. In this compressed state, the stack 10 is ooved in the direc-tion of rotation of the folding turret by the stack rocker 21, the press plate 22 travelling with it. ~hen the per;-pheral speed of the folding turret 12 is reached, the stack 10, in compressed form, is pushed in the radial di-rection by a pushing-in device 23 into the pocket 13, ro-tating in the same plane, of the folding turret 12. Thedimension of the pocket 13 in the peripheral direction cor-responds to the size of the pack 24 to be produced. Ap- }
propriately, the stack 10 is compressed to a somewhat greater extent than the peripheral dimension of the pocket 25 13, so that it becomes easier to push it in.
The press plate 22 is attached to the underside of a pressing rocker 25 movable synchronously with the stack rocker 21. This pressing rocker, like the stack rocker 21, is pivotable about the centre of rotation of 30 the folding turret 12. The pressing rocker 25 is moved, together with the stack rocker 21, in the direction of rotation of the folding turret 12, the pressing position being ma;ntained. After the compressed stack 10 has been pushed into the pocket, the pressing rocker 25 returns to 35 the initial position together with the stack rocker 21, but initially at a greater d;stance from the latter, so that the uncompressed stack 10 can be conveyed freely on-to the push-in platform 20.
, .
., ,, , 13(~S9~
The pushing-in device Z3 is connected to the pres-sing rocker 25 so as to be relatively movable. The latter is provided, outside the region of the foldin~ turret 12, ~it~ an oblong hole 26, in which a guide roller 27 connec-S ted to the pushing-in device 23 is movable to and fro~ The guide roller 27 is arranged on a link 28, by means of which the pushing-in device 23 is moved to and fro. rhe link 28 is itself connected to a crank arm 29 pivotable about the axis of rotation of the folding turret 12. A movement of the link Z8 causes a linear shift of the pushing-in device 23, the stack 10 being pushed into a pocket 13 at the same time. The pushing-in device 23 is made hook-shaped, so that the stack 10 can be grasped on the outside.
The stacks 10 are pushed ;nto the pockets 13, each taking with it the blank 11 provided in the pushing-in sta-tion 14. For this purpose, the blanks 11 are brought, via a deflecting roLler 30, up to the periphery of the folding turret 12. This is provided with a multiplicity of suction bores 31, 32 opening onto the peripheral surface. The ar-rangement of these is such that two suction bores 32 or groups of suction bores 32 are arranged on both sides of each pocket 13. As a result, each blank is secured by means of suction air at its edges at the front and rear in the conveying direction and on both sides of the pocket 13. The suction bores 31, 32 are connected to a vacuum source via a suction segment 33 and a radial suction line 34.
The suction segment 33 extends in the peripheral direction into a region located after the pushing-in sta-tion 14. It is then followed by a blowing-air segment 35 which, via a compressed-air line 36, feeds air through the suction bores 31, 32 over a part zone. An air stream sta-bilizing the radial position of tubular tabs 37 and 38 is thereby yenerated particularly by means of the suction bores 3Z arranged directly on both sides of the pocket 13.
These tubular tabs 37, 38 which project on the outside or protrude from the pocket after the stack 10 has been pushed into the pocket 13, togcther ~ith the blank 11 folded in a ~30S9i7 U-shaped manner, are now folded, specifically first the tubular tab 37, at the rear in the conveying direction, by a pivotable folder 39 which folds the tubular tab 37 from the rear against the outer side face of the stack 10.
The pocket 13, together with the stack lO and the partially folded blank 11, thereafter enters the region of a sealing unit 40. This consists of an endless covering band 41 which rotates, moved in particular at the speed of the folding turret 12, and which is made of heat-resistant material, especially a textile Teflon* band. The covering band 41 is guided via two deflecting rollers 42, 43 arranged at a relatively long distance from one another and located directly adjacent to the periphery of the folding turret 12.
A third deflecting roller 44 is assigned to the rear outer strand of the covering band 41. As a result of the relative position of the deflecting rollers 42, 43, a conveying or jointly running conveying strand fits closely against the peripheral surface of the folding turret 12. Arranged on the outside of the conveying strand 45 is a heating element, in particular an arcuate heating segment 46. This element is made arcuate concentrically relative to the folding turret 12, but is arranged so that it has no permanent contact with the covering band 41 or its conveying strand 45.
When the pocket 13, together with its content, enters the region of the covering band 41, the tubular tab 38 located at the front in the conveying direction is folded round against the outer side face, partially over-lapping with the tubular tab 37. During further conveyance, the stack 10 together with the blank 11 enters the region of the heating segment 46.
It is important, here, that, as a result of appropriately selected dimensions, the stack 10, including the folded blank 11, should project slightly from the pocket 13 in the radial direction, that is to say protrude beyond the peripheral * Registered Trade-mark of E.I. DuPont de Nemours and Company, U.S.A.
:
i. X
__~.....
~.. .. .
-7a-surface of the folding turret 12. The covering band 41 or its conveying strand 45 is thereby lifted slightly by the stack 10 in the region of a pocket 13, in particular until it comes ..,,, . _ ~
., ~
r~ _ 1 3~5~
up against the heating segment 46. The heat for carrying out sealing and also a certain pressure are thus transmit-ted here locally in the region of the folded tubular tabs 37, 38. The heating segment 46 extends over a region of the folding turret 12 corresponding to the distance bet~een three successive pockets 13, to an extent sufficient to carry out secure sealing.
The heating segment 4~ can be adjusted radially, in particular retracted from the heating position, by means of members not shown in detail, ~hen no packs are supplied during an interruption in operation or when the folding turret 12 temporarily stands still.
The pack, finished in respect of the outer tub-uLar fold (tubular tabs 37 and 38) now passes, together with the associated pocket, into the region of a pushing-out station 47. This is located opposiee the pushing in station 14, that is to say in the horizon~al m;d-plane of the folding turret 12.
Arranged in the region of the pushing-out station 47 and adjacent to the outer periphery of the folding tur-ret 12 is a push-out platform 48. This is moved to and fro or up and dovn in the peripheral direction of the fold-ing turret 12 in correspondence with the push-in platform 20. The largely finished pack 24 is pushed out of the pocket and onto the push-out platform 48 during a phase of synchronous movement of the folding turret 12 and push-out platform 48. The push-out platform 48 then returns to an ~upper) end position ~hich is aligned with a discharge conveyor 49 ;n the horizontal mid-plane.
In the present exemplary embodiment, the push-out platform 48 is connected to the stack rocker 21 which is extended beyond the axis of rotation of the folding turret 12 and which, opposite the push-in platform 20, receives the push-out platform 48 at the free end. The movements of the rush-in platform 20 and of the push-out platform 48 therefore always correspond to one another.
The relative arrangment is such that the push-in platform 20 is moved upwards, after rece;ving a stack i30591~
g 10, and at the same t;me the push-out platform 48 is moved dovnwards for acceLeration up to the peripheral speed of the f~ld;ng turret 12. The transfer of the pack 24 to the push-out platform 48 consequently takes place be~o~ the plane of the discharge conveyor 49. During the return of the push-in platform 20 to the initial pos;tion, the push-out platform 48, together ~ith the pack, is moved up~ards level with the discharge conveyor 49, and during a momen-tary standstill phase the pack is dra~n off from the push-out platform 48 in the radial direction by a hook-shaped pushing-off device and transferred to the discharge con-veyor 49.
Each pocket 13 has its o~n pushing-out device 51 assigned to it. In the retracted initial position~ this device is located on the radially inner side of the pocket 13 and thus forms the bottom of the latter. For this pur-pose, the pushing-out device 51 is designed as a strip ~hich extends over the entire length of the pocket 13 in the axial direction. For the lateral linitation of the other~ise open pockets 13, folding thumbs 52, 53 pointing in the radiaL direction are arranged laterally on the pushing-out device 51. The axial distance between the folding thumbs 52, 53 corresponds to the Length of the stack 1û or pack 24. As a result of the des;gn of the folding thumbs 52, 53, when a stack 10 together with a blank 11 is pushed ;nto a pocket 13, a side tab 54 loc-ated at the front in the pushing-in direction is folded.
This is the first fold of a kno~n cross-fold formed on the end faces of the pack.
the outer side tab 55 located opposite the inner side tab 54 is folded only ~hen the pack is pushed out of the pocket in the region of the pushing-out station 47.
For this purpose, folding thumbs 56 are arranged laterally on the push-out platform 48, ~hich take effect in the opposite direction to the folding thumbs 52, 53 and, ~hen the pack 24 is pushed onto the push-out platform 48, fold the side tab 55 located at the front in the conveying di-rection. For the better guidance and fixing of the pack, 13059~
the push-out platform 48 is made pocket-shaped, in parti-cular ~ith a top ~all 57 as an upper guide for the pack.
When the pack Z4 is pushed into the discharge con-veyor 49 from the push-out platform 48, upper and lower longitudinal side tabs 58 are folded. For this purpose, in the entry region of the disharge conveyor 49 there are, attached laterally between a lo~er band 59 and an upper band 60, folding members, in particular folding tongues 61, by ~hich the upper and lo~er longitudinal side tabs 58 are folded in a kno~n ~ay during the transport of the packs. The side tabs 54 and 55 folded first are held in position, in this region, by means of angular guide mem-bers 62.
In order to push a pack 24 out of a pocket 13 in the reg;on of the pushing-out station 47, the pushing-out device 51 assigned to the pocket 13 is moYed in the radial direction. For this purpose, the pushing-out device 51 is attached to radially directed rams 63. T~o such rams 63 are arranged on each pushing-out device 51 at a distance fro0 one another in the axial direction and are held slide-ably in guides 64 inside the turret 12. The radial move-ment of the pushing-out devices 51 is brought about by la-teral cam discs 65, in vhich a control groove 66 is made.
In turn, a guide roller 67 assigned to each pushing-out device 51 runs in this control groove 66. In the exemplary embodiment illustrated, a guide roller 67 is arranged at each of the tvo ends of a transverse rod 68 connecting the rams 63 to one another.
The control groove 66 of the cam disc 65 is made concentric relative to the folding turret 12 over its pre-dominant extent, so that the pushing-out devices 51 are in the retracted inner position. In the region of the pushing-out station 47, specifically belou the latter, the control groove bulges radially at 69. This bulge gives rise to the ejecting stroke of the pushing-out device 51 ~hen the pocket 13 and push-out platform 48 rotate adjacent to one another at the same speed.
- The pivoting movements of the stack rocker 21 and 3()S~
consequently of the push-in platform 20 and push-out plat-for- 48 are set to an amount of move~ent (arrows 70) of 18. As is evident from Figure 6, an acceleration phase of 4 in the present case and a synchronous phase 72 of 10 are provided. During this, the stacks 10 or packs Z4 are transferred into the pocket 13 and out of it respec-tively.
As is also evident from Figure 6, for the accel-eration of the pushing-out operation during this phase, the cam disc 65 is additionally pivoted in the opposite direction to the folding turret, so that the bulge 69 of the control groove 66 moves out of the initial position, represented by dot-and-dash lines in Figure 6, into the position shown by unbroken lines~ This results in a rapid brief radial movement of the rams 63 during the synchron-ous phase 7Z.
The apparatus illustrated here is des;gned for two-track operation in order to increase the productive capacity. Accordingly, two stacks 10 are fed simultan-ZO eously, by ~eans of two paralLel feed conveyors 15, to thefolding turret 12. The dimensions of the latter in the axial direction are such that the two stacks 10 can be re-ceived next to one another in a common continuously open pocket 13. In the present case, the folding turret 12 is designed as a hollow body on the principle of construction of the yarn spool, with a cylindrical turret casing 73 and an approximately central radial support 74 on a rotating hub 75. Formed at one edge of the turret casing 73 is a flange 76 which is directed radially inwards and ~hich is designed with an internal toothing 77 extending all round for the engagement of a drive pinion 78~
A cam disc 65 is located on each side within the turret casing 73. The two cam discs are connected to one another via a hollow shaft 79. One of the cam discs 65 ~shown at the top in Figure 2) is driven in a rocking mo-tion by means of a crank ~echanism 80, in order to bring about the pushing-out movement described in relation to Figure 6. The cam discs 65 are moved jointly by means of - l~O~9i'~
the hollow shaft 79.
The rams b3 for actuating the push;ng-out devices 51 are also located ins;de the turret casing 73. The gu;des 64 are connected to the supports 74.
The pushing-out dev;ces 51 extend over the entire axial length of the pockets 13 for receiving two stacks 10. Each strip-shaped pushing-out device 51 is accordingly provided with t~o pair of folding thumbs 52, 53~
The push-in platform 20 (Figure 4) is made in one piece and has a width for receiving two stacks 10. The po-sition of these on the push-in platform ZO continuous in the axial direction is guaranteed by lateral guides 81, 82 which are designed, on the entry side, with a run-in cham-fer 83 and also ~ith an upper chamfer 84. The pendulum drive of the stack rocker 21 is attached on the side of the push-in platform 20 and below this. A lever 85 as part of a crank mechanism 86 engages centra~ly here.
The pushing-in devices 23 for the two production tracks are also designed in a special way. Two pushing-in devices 23 of this type are connected to one another by means of an upper crossmember 87. Each pushing-in device 23 is divided into three by means of vertical slots 88.
These are arranged so that, when the pushing-in device 23 is retracted, the correspondingly fork-shaped tappet 16 of the teed conveyor 15 can run right into the region of the pushing-in device 23, in particular because the fork-shaped tappet 16 passes through the slots 88.
Press plates 22 assigned to the two production tracks are arranged on the underside of a supporting beam 89 extending in the axial direction. Adjoining each of its lateral ends is the pressing rocker 25 which accordingly extends on both sides of the folding turret 1Z by means of tuo rocker arms 90, 91 and ~hich is mounted rotatably in a bearing recess 92 of the hollow shaft 79. The pressing rocker 25 or its rocker arms 90, 91 are extended beyond the abovementioned bearing, that is to say beyond the centre of rotation of the folding turret 12. On the side located op-posite the pushing-in station 14, the ends of the rocker arms 90, 91 are connected to one another by means of a transverse rod 93. A pivoting drive for the pressing rocker 25, in particular a crank ~echanism 94, engages on this rod approximately in the centre. The rocker arms 90, 91 S extend as vertical legs on the top side of the supporting beam 89. The t~o rocker arms 90, 91 are provided, in the reg;on of the push-in platform, ~ith an oblong hole 26 for the guide roller 27 of the pushing-;n devices 23. For this purpose, their transversely directed crossmember 87 is pro-1û vided with do~n~ard-directed legs 95, to the inner face of each of which the guide roller 27 is attached.
Two links 28 extending laterally next to the fold-ing turret 12 and intended for the joint actuat;on of the two pushing-in devices 23 are assigned, as extensions of the legs 95, to the pushing-in devices 23 or to the common crossmember 87. The erlds of the links 28 are each connec-ted, in turn, to a crank arm 29. The two crank arms 29 are triven in a rocking motion by means of a common drive shaft 96 which is mounted rotatably in the hoLlow shaft 79.
The hollow shaft 79 or its bearing recess 92 also serves for the rotatable mounting of the stack rockers Z1 likewise extending on both sides of the folding turret 12.
Finally, located in each of the two bearing recesses 9Z is a bearing block 97 as a supporting stand or machine stand Z5 of the folding turret 1Z.
In order to produce an exact pack Z4, a skirt 98 arranged in the region of the pushing-in station 14 extends downwards along a part periphery of the folding turret 12 and fits closely against the periphery of the latter. The skirt 98 is provided, level with the pushing-in platform Z0, with an aperture 99 for the passage of the stack 10.
The skirt 98 is attached to the press plate ZZ, in parti-cular to the underside of the latter, and is consequently moved up and down together with it.
The side of the pushing-out station 47 is also designed for two-track operation. As is evident from Figure 5, for the two production tracks there is a com-mon continuous push-out platform 48 which is sub-divided 1;~()S917 into closed push-out pockets 100, 101 by means of the top wall 57 and side walls with folding thumbs 56. Two hook-shaped pushing-off devices 50 ass;gned to the push-out pockets 100, 101 are connected by means of a crossbar 102 S to form a common structure. Two packs 24 are therefore al~ays drawn off from the push-out platform 48. The top ~aLl 57 is provided with slots 103 for the passage of the crossbar 102.
Claims (16)
1. Process for the packaging of compressible articles, especially stacks of paper handkerchiefs, into a blank consisting of plastic film or the like, characterized in that the article (10) is compressed before wrapping and is then pushed into a pocket (13) of a rotating folding turret (12) in compressed form.
2. Process according to claim 1, characterized in that the article (10) is pushed into the pocket (13) of the folding turret (12) such that it takes along the blank (11) which lays itself round the article in a U-shaped manner.
3. Apparatus for the packaging of compressible articles, especially stacks of paper handkerchiefs, into a blank consisting of plastic film or the like, with a continuously rotating folding turret having outwardly open pockets, into which the articles can be pushed, taking with them the blank which lays itself round the article in a U-shaped manner, wherein the articles can be conveyed, by means of a feed conveyor, onto a push-in platform movable to and fro in the peripheral direction of the folding turret in the region of a pushing-in station and can be pushed from this push-in platform into an adjacent pocket in momentary synchronism with the folding action, characterized in that assigned to ..........
the push-in platform (20) is a pressing member which compresses the article (10) on the push-in platform (20) essentially from above and which keeps it in the compressed form until it is pushed into the pocket (13) of the folding turret (12).
the push-in platform (20) is a pressing member which compresses the article (10) on the push-in platform (20) essentially from above and which keeps it in the compressed form until it is pushed into the pocket (13) of the folding turret (12).
4. Apparatus according to claim 3, characterized in that the article (10) is compressible to a size which is slightly less than the dimension (in terms of width in the peripheral direction of the folding turret 12) of the pocket (13).
5. Apparatus according to claim 3, characterized in that the push-in platform (20) and the pressing member are arranged respectively on separate rockers, namely a stack rocker (21) and a pressing rocker (25), which are pivotable relative to one another in a vertical plane concentrically in relation to the folding turret (12).
6. Apparatus according to claim 5, characterized in that the stack rocker (21), in the lower end position, is level with the feed conveyor (15) or a stationary conveying plate (19), adjacent to which is the push-in platform (20) for receiving an article.
7. Apparatus according to claim 5 or 6, characterized in that arranged on the pressing rocker (25) is a pushing-in device (23) which, as result of an axial shift, pushes the article from the push-in platform (20) into the synchronous pocket (13), the pushing-in device (23) being guided in an oblong hole (26) in the pressing rocker (25).
8. Apparatus according to claim 3, characterized in that arranged on the side of the folding turret (12) located opposite the pushing-in station (14), in the region of a pushing-out station (47), is a push-out platform (48) which rocks to and fro in the peripheral direction of the folding turret in correspondence with the push-in platform (20) and onto which largely ready-folded packs (24) pass after ...
being pushed out of the pocket (13), during a movement in synchronism with the folding turret (12).
being pushed out of the pocket (13), during a movement in synchronism with the folding turret (12).
9. Apparatus according to claim 5 or 6, characterized in that the stack rocker (21) is extended beyond the axis of rotation of the folding turret (12) and carries the push-out platform (48) at the end located opposite the push-in platform (20).
10. Apparatus according to claim 8, characterized in that the packs (24) can be pushed out of the pocket (13) and onto the push-out platform (48) below a horizontal (middle) discharge plane, and in that, when the push-out platform (48) returns into an (upper) initial position corresponding to the discharge plane, the packs (24) can be conveyed from this.
11. Apparatus according to claim 10, characterized in that the push-out platform (48) is designed as a push-out pocket, with an upper wall (57) and lateral folding members, especially folding thumbs (56), for folding side tabs (55) of the blank (11).
12. Apparatus according to claim 5 or 6, characterized in that the pressing rocker (25) is extended beyond the axis of rotation of the folding turret (12), and the free ends are connected to one another by means of a transverse rod (93), and in that a drive, especially a crank mechanism (94), engages on the transverse rod (93).
13. Apparatus according to Claim 3, 4 or 5, characterized in that arranged in the pockets (13) of the folding turret (12) are strip-shaped pushing-out devices (51) which can be pushed out in the radial direction by radially directed rams (63) with guide rollers (67) running in control grooves (66) of cam discs (65), folding thumbs (52, 53) being arranged at a distance from one another on the pushing-out devices (51) as a lateral limitation of the pockets (13).
14. Apparatus according to claim 3, .....................
characterized by two production tracks, the folding turret (12) common to both production tracks having axially continuous pockets (13), each with a continuous pushing-out device (51).
characterized by two production tracks, the folding turret (12) common to both production tracks having axially continuous pockets (13), each with a continuous pushing-out device (51).
15. Apparatus according claim 14, characterized in that the push-in platform (20) and/or the push-out platform (18) are designed as continuous members which are common to both production tracks and which each extend adjacent to the folding turret (12) beyond the total length of the latter.
16. Apparatus according to claim 15, characterized in that the stack rocker (21) and/or the pressing rocker (25) extend on both sides of the folding turret (12) and are mounted rotatably at the ends of a hollow shaft (79) concentric relative to the folding turret (12), especially in a bearing recess (92) of the same.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3701273.8 | 1987-01-17 | ||
| DE19873701273 DE3701273A1 (en) | 1987-01-17 | 1987-01-17 | METHOD AND DEVICE FOR PACKING PAPER HANDKERCHIEFS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1305917C true CA1305917C (en) | 1992-08-04 |
Family
ID=6319008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000555302A Expired - Lifetime CA1305917C (en) | 1987-01-17 | 1987-12-23 | Process and apparatus for the packaging of paper handkerchiefs |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4845924A (en) |
| EP (1) | EP0275481B2 (en) |
| JP (1) | JP2585336B2 (en) |
| BR (1) | BR8800145A (en) |
| CA (1) | CA1305917C (en) |
| DE (2) | DE3701273A1 (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3802644C2 (en) * | 1988-01-29 | 1999-10-07 | Focke & Co | Method and device for manufacturing folding boxes for cigarettes |
| DE3832533A1 (en) * | 1988-09-24 | 1990-03-29 | Focke & Co | DEVICE FOR FEEDING PACKAGING CUTTINGS TO A FOLDING UNIT |
| DE3940296A1 (en) * | 1989-06-24 | 1991-01-10 | Focke & Co | PRODUCTION PLANT FOR THE PRODUCTION OF LARGE UNITS IN THE FORM OF CARTONED CONTAINERS FROM GROUPS OF SMALL PACKS OF PAPER POCKETS |
| IT1246011B (en) * | 1991-06-21 | 1994-11-07 | Gd Spa | METHOD AND DEVICE FOR THE REALIZATION OF COSTA JOINTS FOR CLOSURE OF PRODUCT WRAPS. |
| IT1259800B (en) * | 1992-11-20 | 1996-03-26 | Gd Spa | METHOD AND DEVICE FOR THE CREATION OF TUBULAR SUPER-WRAPPING OF HEAT-SEALABLE MATERIAL. |
| IT1259707B (en) * | 1992-11-23 | 1996-03-25 | Supply procedure for rotary packing machine - uses progressive compression and transport unit with cyclic variable speed to insert packets into pockets in rotating drum | |
| DE4304054C2 (en) * | 1993-02-11 | 1996-03-07 | Franken Buchbindery | Device for wrapping printed matter |
| US5463848A (en) * | 1993-12-10 | 1995-11-07 | General Mills, Inc. | Apparatus for folding and ejecting microwave popcorn bags from a fixture |
| US5463845A (en) * | 1993-12-10 | 1995-11-07 | General Mills, Inc. | Apparatus for folding, filling, and sealing microwave popcorn bags |
| US5480372A (en) * | 1993-12-10 | 1996-01-02 | General Mills, Inc. | Apparatus for folding and loading microwave popcorn bags into a fixture |
| US5507132A (en) * | 1993-12-10 | 1996-04-16 | General Mills, Inc. | Apparatus for opening microwave popcorn bags |
| IT1285576B1 (en) * | 1996-03-01 | 1998-06-18 | Gd Spa | CONVEYOR GROUP OF PRODUCTS |
| DE19649543A1 (en) * | 1996-11-29 | 1998-06-04 | Focke & Co | Packaging machine with folding turret for the manufacture of (soft) cup packs for cigarettes |
| DE60004472T3 (en) | 2000-01-25 | 2007-02-08 | Georgia-Pacific France | Dispenser pack for individual removal of web-shaped consumer goods |
| IT1321246B1 (en) * | 2000-05-08 | 2004-01-08 | Gd Spa | METHOD AND UNIT FOR CLOSING THE HEAD OF TUBULAR ENVELOPES IN A CIGARETTE PACKING MACHINE. |
| WO2002042162A1 (en) * | 2000-11-20 | 2002-05-30 | C.G. Bretting Manufacturing Company, Inc. | Log packaging apparatus and method |
| US6865862B2 (en) * | 2000-11-20 | 2005-03-15 | C.G. Bretting Mfg. Co., Inc. | Log bander apparatus and method |
| DE10123804A1 (en) * | 2001-05-16 | 2002-11-28 | Christian Senning Verpackungsm | Method and device for simultaneous packaging on more than one packaging line |
| US7360344B2 (en) * | 2004-09-17 | 2008-04-22 | Fpna Acquisition Corporation | Method and apparatus for sleeve or band-type packaging of a compressible article |
| ITBO20050630A1 (en) * | 2005-10-20 | 2007-04-21 | Kpl Packlaging S P A | METHOD AND MACHINE FOR PACKAGING OF GROUPS OF PRODUCTS ORDERED ON ONE OR MORE LAYERS |
| IT1400205B1 (en) * | 2010-05-31 | 2013-05-24 | Rent Srl | UNITS AND METHOD FOR THE COMPRESSION AND INSERTING OF BATTERIES OF PAPER BENDED PRODUCTS SUCH AS HANDKERCHARMS OR SIMILAR IN AN AUTOMATIC ROTATING DRUM PACKAGING MACHINE |
| IT1400204B1 (en) * | 2010-05-31 | 2013-05-24 | Rent Srl | EQUIPMENT AND METHOD FOR PACKAGING WITH PLASTIC BATTERY FILM OF PAPER BENDED PRODUCTS SUCH AS HANDKERCHARMS OR SIMILAR |
| US9162782B2 (en) | 2012-06-18 | 2015-10-20 | The Procter & Gamble Company | Apparatus for packing stacks of folded tissue products and the like with film |
| CN103193005B (en) * | 2013-04-12 | 2014-12-03 | 常德烟草机械有限责任公司 | Continuous bagging device and continuous bagging method of pillow type tissue paper packing machine |
| CN103241412B (en) * | 2013-05-15 | 2015-06-03 | 温州市王派机械科技有限公司 | Laterally packaging mechanism of soft tissue packaging machine |
| US10691511B2 (en) * | 2018-09-19 | 2020-06-23 | Arm Limited | Counting events from multiple sources |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1382445A (en) * | 1920-03-05 | 1921-06-21 | Package Machinery Co | Wrapping-machine |
| US1653908A (en) * | 1926-09-02 | 1927-12-27 | Hunt S Modern Paper Products I | Paper-napkin machine |
| CH370697A (en) * | 1958-05-02 | 1963-07-15 | Jagenberg Werke Ag | Machine for laying a strip of material around packs of blanks or the like |
| US3053024A (en) * | 1961-04-07 | 1962-09-11 | Wexler Joseph | Machine for folding and wrapping paper bundles |
| DE1238378B (en) * | 1961-11-09 | 1967-04-06 | Alfred Schmermund | Method and device for the production of multiple packs from individual cigarette packs |
| FR1448273A (en) * | 1965-06-24 | 1966-08-05 | Holweg Const Mec | Machine for bundling bags, envelopes, sheets or the like of paper or other material |
| US3504476A (en) * | 1967-07-20 | 1970-04-07 | Goodyear Tire & Rubber | Method of packaging |
| US3583130A (en) * | 1969-05-27 | 1971-06-08 | Amf Inc | Cigarette packers |
| JPS5238399B2 (en) * | 1971-09-14 | 1977-09-28 | ||
| DK128526C (en) * | 1972-05-08 | 1983-02-28 | P Suhr | APPARATUS FOR PACKAGING OF COMPRESSABLE GOODS |
| JPS524398A (en) * | 1975-06-24 | 1977-01-13 | Shin Nippon Seiki Kk | Automatic banding device |
| GB1567994A (en) * | 1976-05-14 | 1980-05-21 | Scandia Packaging Mach | Assembly for handling successive articles that differ in thickness |
| DE2806263C2 (en) * | 1978-02-15 | 1986-08-14 | Focke & Co, 2810 Verden | Device for producing sliding packs for cigarettes |
| US4341056A (en) * | 1980-03-17 | 1982-07-27 | Magna-Graphics Corporation | Machine for compression band packaging |
| DE3332950A1 (en) * | 1983-09-13 | 1985-03-28 | Focke & Co, 2810 Verden | METHOD AND DEVICE FOR ENHANCING CIGARETTE PACKS IN FILM CUTS |
| DE3348487C2 (en) * | 1983-09-14 | 1998-05-20 | Focke & Co | Packaging machine for cigarettes |
-
1987
- 1987-01-17 DE DE19873701273 patent/DE3701273A1/en not_active Withdrawn
- 1987-12-15 EP EP87118558A patent/EP0275481B2/en not_active Expired - Lifetime
- 1987-12-15 DE DE8787118558T patent/DE3779415D1/en not_active Expired - Lifetime
- 1987-12-23 CA CA000555302A patent/CA1305917C/en not_active Expired - Lifetime
- 1987-12-30 US US07/139,523 patent/US4845924A/en not_active Expired - Fee Related
-
1988
- 1988-01-14 JP JP63006727A patent/JP2585336B2/en not_active Expired - Fee Related
- 1988-01-15 BR BR8800145A patent/BR8800145A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0275481A2 (en) | 1988-07-27 |
| DE3779415D1 (en) | 1992-07-02 |
| EP0275481A3 (en) | 1989-04-05 |
| EP0275481B1 (en) | 1992-05-27 |
| US4845924A (en) | 1989-07-11 |
| EP0275481B2 (en) | 1995-11-29 |
| BR8800145A (en) | 1988-08-30 |
| DE3701273A1 (en) | 1988-07-28 |
| JPS63191720A (en) | 1988-08-09 |
| JP2585336B2 (en) | 1997-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |